CSC151 2009F, Class 17: Turtle Graphics

Admin:
* In case you missed the announcement, Assignment 4 is now ready.  
  I'll take questions now and early next week.
* Please have groups chosen for this assignment by Monday.
* Surprise!  There is no lab writeup for this week.
* Because we'll be going over the exam on Monday, there are no readings 
  for Monday.
* We're using the normal Friday strategy: 
  * Take the quiz and then start the lab.  If you finish the quiz before
    your partner, you can do the preparation (or at least bring the lab
    up on the screen).
  * I won't lecture.  
  *** Please leave your quiz at your desk, and I'll pick it up. ***
* Questions on recent stuff (before you take the quiz)

Overview:
* Modeling images through process: Turtle graphics.
* Some historical notes.
* Turtle graphics in DrFu.